Metallic fastening device



(No Model.)

I. W. STARR. METALLIC FASTENING DEVICE-A N0.\396,900. Patented Jan. 29, 1889...,

llNli-EED' Starts FERDINAND W. STARR, F SPRINGFIELD, OHIO.

METALLIC FAsrEnlNo DEVECE.

SPECIFICATION forming part of Letters Patent No. 396,900, dated January 29, 1 889.

' i Application filed January 17, 1888. Serial No- 260,987. (No model.)

To all whom it may concern: Be it known that I, FERDINANI) W. STARR, a citizen of the United States, residing at Springfield, in the county of Clark, State of Ohio, have inventedcertain new and useful Improvements in Nail or Securing Devices, of which the following is a specification, refer-' ence being had therein to the accompanying drawings;

This invent-hm has relation to nails; and among the objects in view are to provide a nail or securing device having a series of cor-.

rugations adapted to be driven in wood either across the grain-thereof, for preventing splitting or warping, or laterally securing together boards, planks,&c., or for strengthening orfastening together wooden joints generally. where the said securing device can be made applicable,whetl1er used in combination with the ordinary nail, screw, bolt, or nut, or to be driven with the grain for the purpose of connecting and forming joints between two meeting ends of rails, rods, planks, &c.

Other objects and advantages of the inven tion will hereinafter appear, and the novel features thereof will be particularly pointed outin the claims.

. said devices being modified for Referring to the drawings, Figure 1 is a per} spective of a nail-blank after having undergone the first step of its formation. Fig. 2 shows the second step or manner of forming the corrugations. Fig. 3 is a perspective of trations of the manner of applying the invention, the former figure being a transversesec- .tion of the latter. Figs-(i and 7 are plans of a miter-joint connected by a nail or device constructed in conformity with my invention, the purpose in view.

Like letters of reference indicate like parts in all the figures of the drawings.

In'carrying out my invention, and as a preferred form of manufacturing the same, I take a plate, (see Fig-1,) which may be of .iron or malleable steel or any other suitable material, and of any length or width desired, which plate is sharpened or beveled at what will be its driving-edge, as shown at A. The plate or strip thus formed: is then preferably passed between a pair of corrugated j rolls, B B, by

which formed the corrugations A transversely in said plate. (See Fig. 2.) The strip thus formedvi z., sharpened at its edge and in Fig. 5, lengthwise the grain, forming a joint smooth and flat between the connecting ends of two rails, rods, &Q., (l U.

As shown in Figs. 6 and 7, the device may be also used at the corners of boxes where the edges of the meeting walls are formed with miter or other forms of joints. In this by forming a complete cylinder. In all cases,

however, aportion of the nail isseated in the .wood at each side of the joint, whereby a snug, strong, and durable joint is formed, and that without splitting, marring, or injuring in any way the surface of .the wood. Other forms of nail may be found preferable for securing together or strengthening different kinds of joints, and in this regard I do not 'limitmy inv'ention.-

' The advantage arising from corrugating the nail, by which is meant forming the se-' curing device with a seriesof body corrugae tions and imparting to it a zigzag drivingedge, is at once apparent, in that said corrugations will take into and form corresponding corrugationsin the wood in which the nail is driven, thus preventing the wood from splitting and the withdrawal of the nail or breakage of the joint formed thereby.

I am aware that nails or spikes have been provided with fins -or ribs or corrugations;

but it will be apparent that the corrugations, wrinkles, or ribs formed on my securing device serve purposes and attain results peculiar to my inventiomfvizz first, preventing the wood from splittlng and warping when driven v rugations formed 'on the securing device or same have been merely superficial.

in it crosswise and edgewise of the wood, thus interlocking with the series of ribs or cornail; second, in applying the device for pnrposesof securing together or strengthening joints it is driven into the contiguous ends or sides simultaneously and at right angles to the mode employed in fastening joints with ordinary nails, bolts, or screws; and thus it will be seen that the, principleinvolved in my invention, ,whether considered as toits application and use, or considered in relation. to force tending to draw a joint formed thereby apart, materiallyditfers from nails or fastenings heretofore used.

Nails or spikes have heretofore been provided with. fins, ribs, or corrugations; but the In my invention, however, the corrugations are formed bodily or through and through, so that a corrugation or depression upon one side of the nail will form -a protuberance or rib upon the opposite side, and these protuberances or ribs will alternate with the depresicn upon each side of the nail.

' Having described my invention, what 1.1-;

claim is 1 1. A fastening device having substantially parallel sides, a corrugated body, and'parallel zigzag driving and entering edges, sub-13o stantially asspecified. ;v 2: A strip adapted to be cut into fastening devices, the latter having opposite zigzag parallel edges, one of which is beveled, and a series of corrugations extendingfrom one edge 3 5 FERDINAND XV. STARR. Witnesses:

OSCAR 'lf. MARTIN, BRUCE UHORP'ENING. v 

